Gotta Lorenzo, Mazza Leonardo, Simon Pascal, Roux Guillaume
Université Paris-Saclay, CNRS, LPTMS, 91405 Orsay, France.
Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France.
Phys Rev Lett. 2021 May 21;126(20):206805. doi: 10.1103/PhysRevLett.126.206805.
We show that a simple one-dimensional model of spinless fermions with pair hopping displays a phase in which a Luttinger liquid of paired fermions coexists with a Luttinger liquid of unpaired fermions. Our results are based on extensive numerical density-matrix renormalization-group calculations and are supported by a two-fluid model that captures the essence of the coexistence region.
我们表明，具有对跳迁的无自旋费米子的简单一维模型展示出一个相，其中配对费米子的卢廷格液体与未配对费米子的卢廷格液体共存。我们的结果基于广泛的数值密度矩阵重整化群计算，并得到一个捕捉共存区域本质的双流体模型的支持。
